Module: Webring::Navigation

Included in:
Member
Defined in:
app/models/concerns/webring/navigation.rb

Overview

Requires model to have ‘uid` and `created_at` columns

Instance Method Summary collapse

Instance Method Details

#find_next(source_member_uid) ⇒ Object

Find the next member in the webring after the current one If current member is the last, return the first member (ring concept)



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# File 'app/models/concerns/webring/navigation.rb', line 6

def find_next(source_member_uid)
  source_member = active.find_by(uid: source_member_uid)
  return first_active_member unless source_member

  find_next_active_member(source_member) || first_active_member
end

#find_previous(source_member_uid) ⇒ Object

Find the previous member in the webring before the current one If current member is the first, return the last member (ring concept)



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# File 'app/models/concerns/webring/navigation.rb', line 15

def find_previous(source_member_uid)
  source_member = active.find_by(uid: source_member_uid)
  return last_active_member unless source_member

  find_previous_active_member(source_member) || last_active_member
end

#find_random(source_member_uid: nil) ⇒ Object

Find a random member, excluding the current one if provided If current member is the only one, return it



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# File 'app/models/concerns/webring/navigation.rb', line 24

def find_random(source_member_uid: nil)
  scope = active
  scope = scope.where.not(uid: source_member_uid) if source_member_uid.present?

  return scope.order('RANDOM()').first if scope.exists?
  return active.find_by(uid: source_member_uid) if source_member_uid.present?

  nil
end